Alright, let's work through 2538 times 2830 step by step
2538 × 2830 = 2830 × (2538)
+ 2830 × 8 that equals 22640
+ 2830 × 30 what gives us 84900
+ 2830 × 500 resulting in 1415000
+ 2830 × 2000 what gives us 5660000

= 7182540
